Originally a rural Irish farming community and "Onion Capital of the United States", Eagan became the eighth largest Minnesota city in the 2000 Census following the construction of Highway 77 and Interstate 494. Currently the fourth largest suburb in the metro area, Eagan is predominantly a bedroom community of both Minneapolis and Saint Paul. The city's influence in the region grew when the companies Northwest Airlines and Thomson West established their headquarters.
As of the census of 2000, there were 63,557 people, 23,773 households, and 16,427 families residing in the city. The population density was 1,967.6 people per square mile (759.3/km²). There were 24,390 housing units at an average density of 755.1/sq mi (291.5/km²). The racial makeup of the city was 88.03% White, 3.41% African American, 0.26% Native American, 5.31% Asian, 0.10% Pacific Islander, 0.96% from other races, and 1.93% from two or more races. Hispanic or Latino of any race were 2.24% of the population.
There were 23,773 households out of which 41.2% had children under the age of 18 living with them, 57.9% were married couples living together, 8.4% had a female householder with no husband present, and 30.9% were non-families. 23.0% of all households were made up of individuals and 2.6% had someone living alone who was 65 years of age or older. The average household size was 2.67 and the average family size was 3.23.
In the city the population was spread out with 30.0% under the age of 18, 7.4% from 18 to 24, 38.2% from 25 to 44, 20.2% from 45 to 64, and 4.2% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 96.9 males. For every 100 females age 18 and over, there were 93.7 males.
According to a 2007 estimate, the median income for a household in the city was $77,700, and the median income for a family was $99,665. Males had a median income of $52,029 versus $35,641 for females. The per capita income for the city was $30,167. About 1.9% of families and 2.9% of the population were below the poverty line, including 3.5% of those under age 18 and 4.8% of those age 65 or over.